- #1

- 203

- 5

## Main Question or Discussion Point

For the difficulty of getting a preferred basis in the unitary only MWI. I saw this message by Fredrik:

"If we just let it go, it seems very natural to me to (if we insist on trying to interpret QM as a description of the universe) postulate something like "every 1-dimensional subspace of the Hilbert space of the universe represents a world". This

https://www.physicsforums.com/threads/the-many-worlds-interpretation-of-qm.676537/page-5

What is your objection to Fredrik solution that "every 1-dimensional subspace of the Hilbert space of the universe represents a world"?

"If we just let it go, it seems very natural to me to (if we insist on trying to interpret QM as a description of the universe) postulate something like "every 1-dimensional subspace of the Hilbert space of the universe represents a world". This

*eliminates*the preferred basis problem."https://www.physicsforums.com/threads/the-many-worlds-interpretation-of-qm.676537/page-5

What is your objection to Fredrik solution that "every 1-dimensional subspace of the Hilbert space of the universe represents a world"?